Home / 141,719.80-212,605.30-71,422.20

Finding the Fourth Proportional to 141,719.80, 212,605.30 and 71,422.20

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Solution

The fourth proportional to 141,719.80, 212,605.30 and 71,422.20 is: 107,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,719.80 : 212,605.30 = 71,422.20 : x
  2. Step 2: Convert to fraction form
    141,719.80/212,605.30 = 71,422.20/x
  3. Step 3: Cross multiply
    141,719.80x = 212,605.30 × 71,422.20
  4. Step 4: Simplify right side
    141,719.80x = 15,184,738,257.66
  5. Step 5: Solve for x
    x = 15,184,738,257.66/141,719.80
  6. Step 6: Final answer
    x = 107,146.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.